Fluent 日志文件的使用 英文版

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Interactive mode (Edit/Run)
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Journal File: Parametric Modeling
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Parameters (including arrays), control-blocks, do-loops, arithmetic functions, etc., can be used in the Journal File for simplifying parametric studies.
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/ This is a comment line vertex create coordinates \ 0.0 1.0 2.0
Continue statements with \
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Special commands
reset (deletes all entities) reset mesh (deletes all mesh) read file "filename" (reads a journal file) read pause (pauses journal when using the Run (not Run/Edit) option; click Resume button to continue) All commands and arguments are documented in GAMBIT Command Reference Guide
Think of setting up a complicated matrix of case studies and accomplish the study by not-so-savvy helping hands
Large scale CFD deployment Automate most components of the analysis procedure to maximize analysis productivity and reduce probability of user error Fluent / gambit / Excel
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Arithmetic Expressions
Outline
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Journaling in Gambit
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Basis of Journal Files Parameters: Scalars and Arrays Special Constants Expressions: Arithmetic, Logical and String Functions: String and Arithmetic DO and IF-THEN-ELSE Commands Steps to parameterize GAMBIT Journals Text User Interface (TUI) Parameterize variables in TUI Create your own GUI in Fluent Run Gambit journal in the back ground Post-processing and html reports through journals Easy post-processing of previously stored transient data
Uses:
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Running Journal Files
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Journal files can be processed in two ways:
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Batch modrocessed without interruption "read pause" command will force interrupt with resume option appearing Includes text editor for easy modifications – Mark lines in process field to activate for processing – Editable text field – Right click text field for more options – Auto or Step through activated process lines
Name of parameter
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Scalar: Pipe
Cylinder: Height = 10, Radius = 2 Axis Location: Positive Z Center of the cylinder is offset (Height / 2) in the + z direction from the origin of the active coordinate system
Centered Z
Array (1)
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Define arrays by declare $p[{n1}:m1, {n2}:m2, ...]
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Where p is the name of the parameter n is the starting index ({} indicate this is optional; default is 1) m is the range of the dimension Square brackets [] are necessary
1 2 3
$p[1,1]=.5 $p[1,2]=3 $p[2,1]=1 $p[3,1]=2 $p[2,2]=3 $p[3,2]=4
Pipe 1,
2,
3
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Globally available constants:
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PI TWOPI DEG2RAD RAD2DEG
3.141592653590 6.283185307180 0.0174532925199 57.29577951308
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Parameters
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Scalar or Array Numeric or string Defined by: $param = value
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param = name of parameter value = numeric or string value of parameter Must start with $ Is not case sensitive ($length same as $LENGTH)
Exploring Journals with Gambit and Fluent
A. Mukhopadhyay am@
Objectives•••
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Ease of use during
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Parametric study Repeat study with changes in process parameters Minor design changes Scale up Sensitivity analysis
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Expressions
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Arithmetic, logical, or string Enclose in parentheses when used as arguments to commands, IF statements, or DO conditions
volume create height $h radius1 $r radius3 $r \ offset 0 0 ($h/2) zaxis frustum
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Array (2): Multiple Pipes
declare $p[3,2]
1st dimension is the pipe number (1, 2 or 3) 2nd dimension is the radius (1) or height (2) Pipe # Radius Height
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Journaling in Fluent
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Excel to drive gambit and fluent
3
Journal Files
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Journal File:
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Executable list of Gambit commands
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Created automatically by Gambit from GUI and TUI Can be edited or created externally with text editor
offsets in the x, y and z directions
/original journal file
Positive Z
volume create height 10 radius1 2 radius3 2 offset 0 0 0 zaxis frustum volume create height 10 radius1 2 radius3 2 offset 0 0 5 zaxis frustum /modified journal file with parameters for height ($h) & radius ($r) $h = 10 Use Parenthesis $r = 2 volume create height $h radius1 $r radius3 $r offset 0 0 ($h/2) zaxis frustum 9
Parameter names begin with $. Parameters are case sensitive.
GAMBIT Commands are not case sensitive